Dental manikin-head bench rest



V. MALLON.

DENTAL MANIKIN HEAD BENCH REST.

APPLICATION FILED OCT 26,1920.

Patented Aug. 22, 1922.

If???) Qzg fa M/ VINCENT MALLON, OF YORK, N. Y., ASSIGNOB T0 DENTAL MANIKIN HEAD GO, INC., A CORPORATION OF NEW YORK.

DENTAL EEANIKIN-HEAD BENCH REST.

menace.

Application filed October 26, 1920.

To all whom, it may concern Be it known that I, VINCENT :VTALLON, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Tinprovements in Dental Manikin-Head Bench Rests. of which the following is a clear and exact description.

The object of my invention is a simple construction of a bench-rest for a dental.

manikin head in which the holder and with this the manikin head may be securely anchored in various inclinations.

The anchorage in various inclinations is of great importance. The student operator of dental technics requires a more horizontal tooth axis for working on teeth of the upper jaw and a more vertical tooth axis for working on teeth of the lower aw.

Figure 1 of the accompanying drawing is a side elevation of a bench rest illustrating the manikin head in a high position with a horizontal tooth axis of the teeth of the upper jaw.

Figure 2 is a perspective view at an angle of about 45 degrees of the manikin head holder of the bench rest.

Figure 3 is a perspective view at an angle of about 45 degrees from the back of the frame of the bench rest.

Figure 4 shows in side elevation a bench rest and manikin head anchored in a low position with vertical tooth axis of the teeth of the lower jaw.

The bench rest consists of a frame (Figure 3) which may have holes U for screwing it to a bench or table and is usually made of cast iron, and a metallic holder (Figure 2) which is also preferably made of cast iron. The frame has an upright front section covering and outlining an interior concavity C. This concavity may be of any shape which permits the execution of constructions covered in my claims. In a preferred construction as shown in Figure 3 the upright front section of the frame overlaps the concavity on top by a right and left wing R and L. In the middle of the top of the upright front frame section, the frame may have a cut out portion, the surface M of which is concave and may be of any shape, preferably a portion of spherical surface, the upper edge 10 of said surface being in a plane in advance of the lower edge a. Opposite to the front upright sec- Specificaticn of Letters Patent.

Patented Aug, 22, 1922.

Serial No. 419,593.

tion the frame has a hinge connection. This may be of any kind known for hinges for example like that of a pivot passing through the holes of the connected parts as shown in Figures 1 and 4. The holder (Figure 2) has a hinge on its posterior end which may he of any kind known for hinges for example like that of a pivot passiiig through the holes of the connected parts; and an upper shaft D from which on its front or under-surface a stem P projects in forward direction. The shaft D may he of any shape for example hollow as indicated by the dotted lines H, Figure 1, it thus could receive the bracket B of a manikin head. A tight connection of the bracket B with the shaftcan be made by a screw Z. The stem P projecting from the front or undersurface of the shaft D at an angle which is as shown preferably an angle of about 90 degrees may terminate anteriorly in the right and left wings r and Z. The stem is also provided with a screw thread in its longitudinal axis in which the screw S with a tapered end G can be moved for-ward and backward. The anterior end of the stem P is located in the neighborhood of the concave inside surface of the frame upright and moves freely up and down along the concave inside surface when the hinge has connected the frame and the holder. The hinge is located opposite to the concave inside surface of the frame upright.

The wings 1" and Z may be of such size that a passing beyond the overlapping shoulders R and L is impossible and tight wedging of the wing r of the stem against the wing R- of the frame upright also of the wing, Z, of the stem against the wing L of the frame upright is obtained when the taper G, of the screw S passes forward through the stem P, and makes anchorage upon the inclined top surface M of the frame upright. This would bring about the position of the holder and manikin head in an inclination as shown in Figure 1. If the manikin head is swung up in vertical position the screw 5 with its end G upon the inclined surface M of the frame upright would. wedge upward upon the latter when turned on until the wing Z hits the under surface of the wing L and the wing r touches the under surface of the wing R, thus making a firm anchorage of the holder and manikin head in the highest upward 6129 and bring about any desired alination of the manikin head and holder of the bench rest.

Having now fully described my invention I claim: 7

1. Dental manikin head bench rest-consisting of a concaved frame, a hollow holder hinged at one end with said frame and means for securing anchorage of said holde upon the concave portion of said frame.

2. Dental manikin headbench rest, con-- sist-ing of a cast iron frame, a metallic holder and an adjustment screw in said holder, said frame having an upright front section covering and outlining an interior cavity and having a hinge connection with said holder in the opposite frame section, said holder having a hollow shaft for the reception of the manilrin head bracket and a hollow stem projecting 'angularly from the lower end of said holder,terminating near the concave interior surface of the frame upright opposite to the hinge, said This would bring about the positlon of the holder and maniholder upon the stem being threaded interiorly in its longitudinal axis and carrying saidadjustment screw. I

3. Dental manikin head bench rest consisting of a castiron frame, a hollow metallic holder and an adjustment screw, said frame having an upright front section covering, outlining and overlapping on top by a right and left wing an interior concavity and having); a cut out middle top surface inclined in forward direction upwards from a low inside to a high top edge, and having a hinge connection with said holder in the opposite frame section, a hollow shaft for the reception of a manikin head bracket and a hollow stem projectingat an angle from he lower end of said shaft terminating in a right and left wing near the concave inside surface of the frame upright opposite to the hinge, said stem carrying a screw thread in its longitudinal axis, said adjustment screw passing through said holder and said stem from the back to the front for inakingcontact with and anchorage upon the inside surface of said frame upright.

4;. The combination of a dentaldnanikin head with an inclinable bench-rest having;

a concaved cast iron frame and'a cast iron holder hinged to said frame and provided with 'means for'securing anchorage of said concaved frame.

, VINCENT MALLON.

' itnesses: SIMON YOHALEM, J. R. BURKE. 

